Answer:
The woman gets home at 2:00 pm
Step-by-step explanation:
First, we take the average miles per hour the woman drives.
In this scenario it takes her 30 minutes to drive twenty miles (20 miles from 9:00 to 9:30)
Therefore, if we multiply 30 minutes and 20 miles by two we can conclude that it takes 1 hour to drive 40 miles.
If we divide 200 miles by 40 miles we get 5
In this problem the 5 represents the number of hours it will take for the woman to get home since 40 miles = 1 hour
If we add 5 hours to 9:00 our answer is 2:00 pm